CSEMP assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 139.48 | 140.77 | -66.74 | 133.48 | | | |
| linear | 2 | 141.48 | 143.94 | -66.74 | 133.48 | 0.001 | 1 | 0.9777 |
| smooth (df = 2) | 3 | 142.31 | 146.48 | -66.16 | 132.31 | 1.171 | 1 | 0.2791 |
| smooth (df = 3) | 4 | 140.43 | 146.98 | -64.22 | 128.43 | 3.878 | 1 | 0.0489 |
| smooth (df = 4) | 5 | 141.96 | 151.76 | -63.98 | 127.96 | 0.474 | 1 | 0.4911 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 5.054 | 5.046 | -0.00819 | 0.29695 | -0.028 | 0.9784 |
| last 20 years | 2000 | 2017 | 5.054 | 5.046 | -0.00819 | 0.29695 | -0.028 | 0.9784 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 155.4 | 30.0 | -1.6445 | 0.1595 | -10.313 | 1.0000 |
| ERL | 155.4 | 430.0 | 1.0181 | 0.1595 | 6.384 | <0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_bap_au.jpg "Raw data with supporting information for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
Raw data with assessment
![Raw data with assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_bap_da.jpg "Raw data with assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
Assessment plot
![Assessment plot for benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_bap_as.jpg "Assessment plot for benzo[a]pyrene in sediment at Hunterston (Clyde)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
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